[英]make unsubscribe from javascript event in C# code
i have got such a problem here: 我在这里有这样的问题:
i have a webpage in webbrowser control. 我在webbrowser控件中有一个网页。 that page uses javascript and had subscribed to number of events (ie click).
该页面使用javascript并已订阅了许多事件(即点击)。
here is algorithm that needed: 这是所需的算法:
is there anyway to do that? 反正有这样做吗?
thanks in advance. 提前致谢。
1. method: create the unsubscription functions in javascript and then call it from c# side, 1.方法:在javascript中创建退订函数,然后从c#端调用它,
in the page code: 在页面代码中:
<script type="text/javascript">
// assign the event to the element
document.getElementById("myElem").onclick = function(){
//your code here
}
// clear the event
function clearEvent(){
document.getElementById("myElem").onclick = function(){
return false;
}
}
</script>
in C# side: 在C#端:
IHTMLDocument2 doc = (IHTMLDocument2)IE.Document;
IHTMLWindow2 parentWindow = doc.parentWindow;
if (parentWindow != null)
parentWindow.execScript("clearEvent();", "javascript");
}
2. method: call the unsubscription code directly from c# 2.方法:直接从C#调用取消订阅代码
IHTMLDocument2 doc = (IHTMLDocument2)IE.Document;
IHTMLWindow2 parentWindow = doc.parentWindow;
if (parentWindow != null)
parentWindow.execScript("document.getElementById('myElem').onclick=function(){return false;}", "javascript");
}
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